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The duo calculated that a solar-powered transmitter could indeed beam FRB-like signals across the cosmos — but it would require a
sunlight-collecting area twice the size of Earth to generate the necessary power.
Why would aliens build such a structure? The most plausible explanation, according to the study team, is to blast interstellar spacecraft to
incredible speeds. These craft would be equipped with light sails, which harness the momentum imparted by photons, much as regular ships’ sails
harness the wind.
In April 2016, a $100 million project called Breakthrough Starshot was launched, aimed at sending a small light-propelled robotic spacecraft towards
the Alpha Centauri. Could an advanced alien race have already perfected this technology?
“With light beams, light sails and the lightest spacecraft ever built, we can launch a mission to Alpha Centauri within a
The Starshot spacecraft will consist of a wafer-size chip attached to a super-thin sail. This paired duo will be launched to space aboard a
mothership, and then propelled to the stars by laser light beamed from a high-altitude facility here on Earth.
Scientists studying FRB’s (fast radio bursts) have concluded that these “cosmic flashes” are consistent and within parameters of a light beam used
to power Extragalactic Light Sails.
Our analysis shows that beams used for powering large light sails could yield parameters that are consistent with FRBs.
Moreover, the optimal frequency for powering the light sail is shown to be similar to the detected FRB frequencies.
Scientists caution that this is just a plausible theory, but considering that we humans are at the brink of using this technology, it might be a very
Assuming that ET is responsible for most FRBs, and taking into account the estimated number of potentially habitable planets in the Milky Way
(about 10 billion), Lingam and Loeb calculated an upper limit for the number of advanced alien civilizations in a galaxy like our own: